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<title>class IRB::Notifier::CompositeNotifier - irb: Ruby Standard Library Documentation</title>


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  <h3>Parent</h3>

  <p class="link"><a href="AbstractNotifier.html">IRB::Notifier::AbstractNotifier</a>
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    <li class="calls-super" ><a href="#method-c-new">::new</a>
    <li ><a href="#method-i-def_notifier">#def_notifier</a>
    <li ><a href="#method-i-level-3D">#level=</a>
    <li ><a href="#method-i-level_notifier-3D">#level_notifier=</a>
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    <main role="main" aria-labelledby="class-IRB::Notifier::CompositeNotifier">
    <h1 id="class-IRB::Notifier::CompositeNotifier" class="class">
      class IRB::Notifier::CompositeNotifier
    </h1>

    <section class="description">
    
<p>A class that can be used to create a group of notifier objects with the intent of representing a leveled notification system for irb.</p>

<p>This class will allow you to generate other notifiers, and assign them the appropriate level for output.</p>

<p>The <a href="../Notifier.html"><code>Notifier</code></a> class provides a class-method <a href="../Notifier.html#method-c-def_notifier"><code>Notifier.def_notifier</code></a> to create a new composite notifier. Using the first composite notifier object you create, sibling notifiers can be initialized with <a href="CompositeNotifier.html#method-i-def_notifier"><code>def_notifier</code></a>.</p>

    </section>

      <section id="5Buntitled-5D" class="documentation-section">



        <section class="attribute-method-details" class="method-section">
        <header>
        <h3>Attributes</h3>
        </header>

          <div id="attribute-i-level" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">level</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              <p>Returns the leveled notifier for this object</p>
              </div>
            </div>
          <div id="attribute-i-level_notifier" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">level_notifier</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              <p>Returns the leveled notifier for this object</p>
              </div>
            </div>
          <div id="attribute-i-notifiers" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">notifiers</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              <p>List of notifiers in the group</p>
              </div>
            </div>
            </section>


                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(prefix, base_notifier)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Create a new composite notifier object with the given <code>prefix</code>, and <code>base_notifier</code> to use for output.</p>
                                <div class="method-calls-super">
                                  Calls superclass method
                                  <a href="AbstractNotifier.html#method-c-new"><code>IRB::Notifier::AbstractNotifier::new</code></a>
                              </div>

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File irb/notifier.rb, line 117</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">prefix</span>, <span class="ruby-identifier">base_notifier</span>)
  <span class="ruby-keyword">super</span>

  <span class="ruby-ivar">@notifiers</span> = [<span class="ruby-constant">D_NOMSG</span>]
  <span class="ruby-ivar">@level_notifier</span> = <span class="ruby-constant">D_NOMSG</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-def_notifier" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">def_notifier</span><span
                                class="method-args">(level, prefix = &quot;&quot;)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Creates a new <a href="LeveledNotifier.html"><code>LeveledNotifier</code></a> in the composite <a href="CompositeNotifier.html#attribute-i-notifiers"><code>notifiers</code></a> group.</p>

<p>The given <code>prefix</code> will be assigned to the notifier, and <code>level</code> will be used as the index of the <a href="CompositeNotifier.html#attribute-i-notifiers"><code>notifiers</code></a> Array.</p>

<p>This method returns the newly created instance.</p>

                              <div class="method-source-code" id="def_notifier-source">
            <pre><span class="ruby-comment"># File irb/notifier.rb, line 133</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">def_notifier</span>(<span class="ruby-identifier">level</span>, <span class="ruby-identifier">prefix</span> = <span class="ruby-string">&quot;&quot;</span>)
  <span class="ruby-identifier">notifier</span> = <span class="ruby-constant">LeveledNotifier</span>.<span class="ruby-identifier">new</span>(<span class="ruby-keyword">self</span>, <span class="ruby-identifier">level</span>, <span class="ruby-identifier">prefix</span>)
  <span class="ruby-ivar">@notifiers</span>[<span class="ruby-identifier">level</span>] = <span class="ruby-identifier">notifier</span>
  <span class="ruby-identifier">notifier</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-level-3D" class="method-detail method-alias">
                            <div class="method-heading">
                              <span class="method-name">level=</span><span
                                class="method-args">(value)</span>
                            </div>

                            <div class="method-description">
                              

                            </div>


                            <div class="aliases">
                              Alias for: <a href="CompositeNotifier.html#method-i-level_notifier-3D">level_notifier=</a>
                            </div>
                          </div>

                  <div id="method-i-level_notifier-3D" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">level_notifier=</span><span
                                class="method-args">(value)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Sets the leveled notifier for this object.</p>

<p>When the given <code>value</code> is an instance of <a href="AbstractNotifier.html"><code>AbstractNotifier</code></a>, <a href="CompositeNotifier.html#attribute-i-level_notifier"><code>level_notifier</code></a> is set to the given object.</p>

<p>When an Integer is given, <a href="CompositeNotifier.html#attribute-i-level_notifier"><code>level_notifier</code></a> is set to the notifier at the index <code>value</code> in the <a href="CompositeNotifier.html#attribute-i-notifiers"><code>notifiers</code></a> Array.</p>

<p>If no notifier exists at the index <code>value</code> in the <a href="CompositeNotifier.html#attribute-i-notifiers"><code>notifiers</code></a> Array, an <a href="ErrUndefinedNotifier.html"><code>ErrUndefinedNotifier</code></a> exception is raised.</p>

<p>An <a href="ErrUnrecognizedLevel.html"><code>ErrUnrecognizedLevel</code></a> exception is raised if the given <code>value</code> is not found in the existing <a href="CompositeNotifier.html#attribute-i-notifiers"><code>notifiers</code></a> Array, or an instance of <a href="AbstractNotifier.html"><code>AbstractNotifier</code></a></p>

                              <div class="method-source-code" id="level_notifier-3D-source">
            <pre><span class="ruby-comment"># File irb/notifier.rb, line 157</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">level_notifier=</span>(<span class="ruby-identifier">value</span>)
  <span class="ruby-keyword">case</span> <span class="ruby-identifier">value</span>
  <span class="ruby-keyword">when</span> <span class="ruby-constant">AbstractNotifier</span>
    <span class="ruby-ivar">@level_notifier</span> = <span class="ruby-identifier">value</span>
  <span class="ruby-keyword">when</span> <span class="ruby-constant">Integer</span>
    <span class="ruby-identifier">l</span> = <span class="ruby-ivar">@notifiers</span>[<span class="ruby-identifier">value</span>]
    <span class="ruby-identifier">raise</span> <span class="ruby-constant">ErrUndefinedNotifier</span>, <span class="ruby-identifier">value</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">l</span>
    <span class="ruby-ivar">@level_notifier</span> = <span class="ruby-identifier">l</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-identifier">raise</span> <span class="ruby-constant">ErrUnrecognizedLevel</span>, <span class="ruby-identifier">value</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">l</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>

                            <div class="aliases">
                              Also aliased as: <a href="CompositeNotifier.html#method-i-level-3D">level=</a>
                            </div>

                          </div>

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